diff --git a/conf/map_conf.go b/conf/map_conf.go
index 477dd2ed0..a3ee1b473 100644
--- a/conf/map_conf.go
+++ b/conf/map_conf.go
@@ -11,6 +11,7 @@ const (
 	StringType     = "string"
 	IntType        = "int"
 	Int64Type      = "int64"
+	Int32Type      = "int32"
 	BoolType       = "bool"
 	StringListType = "[]string"
 	AliasMapType   = "[string string, string]"
@@ -80,6 +81,26 @@ func (conf MapConf) GetInt(key string) (int, error) {
 	return v, nil
 }
 
+func (conf MapConf) GetInt32Or(key string, deft int32) (int32, error) {
+	ret, err := conf.GetInt32(key)
+	if err != nil {
+		return deft, err
+	}
+	return ret, nil
+}
+
+func (conf MapConf) GetInt32(key string) (int32, error) {
+	value, exist := conf[key]
+	if !exist {
+		return 0, ErrConfMissingKey(key, Int32Type)
+	}
+	v, err := strconv.ParseInt(value, 10, 32)
+	if err != nil {
+		return 0, ErrConfKeyType(key, Int32Type)
+	}
+	return int32(v), nil
+}
+
 func (conf MapConf) GetInt64Or(key string, deft int64) (int64, error) {
 	ret, err := conf.GetInt64(key)
 	if err != nil {
diff --git a/reader/rest_reader_models.go b/reader/rest_reader_models.go
index ab5e6d9d4..61358d864 100644
--- a/reader/rest_reader_models.go
+++ b/reader/rest_reader_models.go
@@ -163,9 +163,9 @@ const (
 var (
 	ModeUsages = KeyValueSlice{
 		{ModeFileAuto, "从文件读取( fileauto 模式)", ""},
-		{ModeDir, "从文件读取( dir 模式)", ""},
 		{ModeFile, "从文件读取( file 模式)", ""},
 		{ModeTailx, "从文件读取( tailx 模式)", ""},
+		{ModeDir, "从文件读取( dir 模式)", ""},
 		{ModeDirx, "从文件读取( dirx 模式)", ""},
 		{ModeMySQL, "从 MySQL 读取", ""},
 		{ModeMSSQL, "从 MSSQL 读取", ""},
diff --git a/sender/fault_tolerant.go b/sender/fault_tolerant.go
index 64ccd52b0..063b66ead 100644
--- a/sender/fault_tolerant.go
+++ b/sender/fault_tolerant.go
@@ -25,6 +25,7 @@ const (
 	mb                = 1024 * 1024 // 1MB
 	defaultWriteLimit = 10          // 默认写速限制为10MB
 	maxBytesPerFile   = 100 * mb
+	maxDiskUsedBytes  = 32 * GB
 	qNameSuffix       = "_local_save"
 	directSuffix      = "_direct"
 	defaultMaxProcs   = 1         // 默认没有并发
@@ -64,6 +65,8 @@ type FtOption struct {
 	longDataDiscard   bool
 	innerSenderType   string
 	pandoraSenderType string
+	maxDiskUsedBytes  int64
+	maxSizePerFile    int32
 }
 
 type datasContext struct {
@@ -88,6 +91,8 @@ func NewFtSender(innerSender Sender, conf conf.MapConf, ftSaveLogPath string) (*
 	}
 	procs, _ := conf.GetIntOr(KeyFtProcs, defaultMaxProcs)
 	runnerName, _ := conf.GetStringOr(KeyRunnerName, UnderfinedRunnerName)
+	maxDiskUsedBytes, _ := conf.GetInt64Or(KeyMaxDiskUsedBytes, maxDiskUsedBytes)
+	maxSizePerFile, _ := conf.GetInt32Or(KeyMaxSizePerFile, maxBytesPerFile)
 
 	opt := &FtOption{
 		saveLogPath:       logPath,
@@ -100,6 +105,8 @@ func NewFtSender(innerSender Sender, conf conf.MapConf, ftSaveLogPath string) (*
 		longDataDiscard:   longDataDiscard,
 		innerSenderType:   senderType,
 		pandoraSenderType: pandoraSendType,
+		maxDiskUsedBytes:  maxDiskUsedBytes,
+		maxSizePerFile:    maxSizePerFile,
 	}
 
 	return newFtSender(innerSender, runnerName, opt)
@@ -115,38 +122,41 @@ func newFtSender(innerSender Sender, runnerName string, opt *FtOption) (*FtSende
 		lq = queue.NewDirectQueue("stream" + directSuffix)
 	} else if !opt.memoryChannel {
 		lq = queue.NewDiskQueue(queue.NewDiskQueueOptions{
-			Name:            "stream" + qNameSuffix,
-			DataPath:        opt.saveLogPath,
-			MaxBytesPerFile: maxBytesPerFile,
-			MaxMsgSize:      maxBytesPerFile,
-			SyncEveryWrite:  opt.syncEvery,
-			SyncEveryRead:   opt.syncEvery,
-			SyncTimeout:     2 * time.Second,
-			WriteRateLimit:  opt.writeLimit * mb,
+			Name:             "stream" + qNameSuffix,
+			DataPath:         opt.saveLogPath,
+			MaxBytesPerFile:  int64(opt.maxSizePerFile),
+			MaxMsgSize:       opt.maxSizePerFile,
+			SyncEveryWrite:   opt.syncEvery,
+			SyncEveryRead:    opt.syncEvery,
+			SyncTimeout:      2 * time.Second,
+			WriteRateLimit:   opt.writeLimit * mb,
+			MaxDiskUsedBytes: opt.maxDiskUsedBytes,
 		})
 	} else {
 		lq = queue.NewDiskQueue(queue.NewDiskQueueOptions{
 			Name:              "stream" + qNameSuffix,
 			DataPath:          opt.saveLogPath,
-			MaxBytesPerFile:   maxBytesPerFile,
-			MaxMsgSize:        maxBytesPerFile,
+			MaxBytesPerFile:   int64(opt.maxSizePerFile),
+			MaxMsgSize:        opt.maxSizePerFile,
 			SyncEveryWrite:    opt.syncEvery,
 			SyncEveryRead:     opt.syncEvery,
 			SyncTimeout:       2 * time.Second,
 			WriteRateLimit:    opt.writeLimit * mb,
 			EnableMemoryQueue: true,
 			MemoryQueueSize:   int64(opt.memoryChannelSize),
+			MaxDiskUsedBytes:  opt.maxDiskUsedBytes,
 		})
 	}
 	bq = queue.NewDiskQueue(queue.NewDiskQueueOptions{
-		Name:            "backup" + qNameSuffix,
-		DataPath:        opt.saveLogPath,
-		MaxBytesPerFile: maxBytesPerFile,
-		MaxMsgSize:      maxBytesPerFile,
-		SyncEveryWrite:  opt.syncEvery,
-		SyncEveryRead:   opt.syncEvery,
-		SyncTimeout:     2 * time.Second,
-		WriteRateLimit:  opt.writeLimit * mb,
+		Name:             "backup" + qNameSuffix,
+		DataPath:         opt.saveLogPath,
+		MaxBytesPerFile:  int64(opt.maxSizePerFile),
+		MaxMsgSize:       opt.maxSizePerFile,
+		SyncEveryWrite:   opt.syncEvery,
+		SyncEveryRead:    opt.syncEvery,
+		SyncTimeout:      2 * time.Second,
+		WriteRateLimit:   opt.writeLimit * mb,
+		MaxDiskUsedBytes: opt.maxDiskUsedBytes,
 	})
 	ftSender := FtSender{
 		exitChan:    make(chan struct{}),
diff --git a/sender/rest_senders_models.go b/sender/rest_senders_models.go
index 32aee7a21..744f60276 100644
--- a/sender/rest_senders_models.go
+++ b/sender/rest_senders_models.go
@@ -1,6 +1,8 @@
 package sender
 
 import (
+	"strconv"
+
 	. "github.com/qiniu/logkit/utils/models"
 	"github.com/qiniu/pandora-go-sdk/base/config"
 )
@@ -90,6 +92,24 @@ var (
 		Advance:       true,
 		ToolTip:       `丢弃大于2M的数据`,
 	}
+	OptionMaxDiskUsedBytes = Option{
+		KeyName:      KeyMaxDiskUsedBytes,
+		ChooseOnly:   false,
+		Default:      strconv.Itoa(maxDiskUsedBytes),
+		DefaultNoUse: false,
+		Description:  "磁盘使用总大小限制(max_disk_used_bytes)",
+		Advance:      true,
+		ToolTip:      `磁盘使用总大小限制`,
+	}
+	OptionMaxSizePerSize = Option{
+		KeyName:      KeyMaxSizePerFile,
+		ChooseOnly:   false,
+		Default:      strconv.Itoa(maxBytesPerFile),
+		DefaultNoUse: false,
+		Description:  "磁盘队列单个文件最大字节(max_size_per_file)",
+		Advance:      true,
+		ToolTip:      `磁盘队列单个文件最大字节, 也是单个消息的最大字节。最大不超过2GB`,
+	}
 	OptionLogkitSendTime = Option{
 		KeyName:       KeyLogkitSendTime,
 		Element:       Radio,
@@ -473,6 +493,8 @@ var ModeKeyOptions = map[string][]Option{
 		OptionFtMemoryChannel,
 		OptionFtMemoryChannelSize,
 		OptionKeyFtLongDataDiscard,
+		OptionMaxDiskUsedBytes,
+		OptionMaxSizePerSize,
 		{
 			KeyName:       KeyForceMicrosecond,
 			Element:       Radio,
@@ -604,6 +626,8 @@ var ModeKeyOptions = map[string][]Option{
 		OptionFtMemoryChannel,
 		OptionFtMemoryChannelSize,
 		OptionKeyFtLongDataDiscard,
+		OptionMaxDiskUsedBytes,
+		OptionMaxSizePerSize,
 	},
 	TypeInfluxdb: {
 		{
@@ -708,6 +732,8 @@ var ModeKeyOptions = map[string][]Option{
 		OptionFtMemoryChannel,
 		OptionFtMemoryChannelSize,
 		OptionKeyFtLongDataDiscard,
+		OptionMaxDiskUsedBytes,
+		OptionMaxSizePerSize,
 	},
 	TypeDiscard: {},
 	TypeElastic: {
@@ -771,6 +797,8 @@ var ModeKeyOptions = map[string][]Option{
 		OptionFtMemoryChannel,
 		OptionFtMemoryChannelSize,
 		OptionKeyFtLongDataDiscard,
+		OptionMaxDiskUsedBytes,
+		OptionMaxSizePerSize,
 	},
 	TypeKafka: {
 		{
@@ -839,6 +867,8 @@ var ModeKeyOptions = map[string][]Option{
 		OptionFtMemoryChannel,
 		OptionFtMemoryChannelSize,
 		OptionKeyFtLongDataDiscard,
+		OptionMaxDiskUsedBytes,
+		OptionMaxSizePerSize,
 	},
 	TypeHttp: {
 		{
@@ -882,5 +912,7 @@ var ModeKeyOptions = map[string][]Option{
 		OptionFtMemoryChannel,
 		OptionFtMemoryChannelSize,
 		OptionKeyFtLongDataDiscard,
+		OptionMaxDiskUsedBytes,
+		OptionMaxSizePerSize,
 	},
 }
diff --git a/sender/sender.go b/sender/sender.go
index f625dc070..cc5a3f3d5 100644
--- a/sender/sender.go
+++ b/sender/sender.go
@@ -130,6 +130,10 @@ const (
 	KeyFtMemoryChannelSize = "ft_memory_channel_size"
 	KeyFtLongDataDiscard   = "ft_long_data_discard"
 
+	// queue
+	KeyMaxDiskUsedBytes = "max_disk_used_bytes"
+	KeyMaxSizePerFile   = "max_size_per_file"
+
 	// ft 策略
 	// KeyFtStrategyBackupOnly 只在失败的时候进行容错
 	KeyFtStrategyBackupOnly = "backup_only"